Web server down. Error code 521

0

My web server is not responding. When accessing the website, the web server is noted as down. That is, Error code 521 appears

1 Answer
0

If I access the EC2 website directly without Cloudflare in between, will the page appear?

Was the website accessible in the first place?
If you were able to access the site, check to see if the web server in EC2 (for example, Apache) is running.

If you are not able to access it, please check if communication from Cloudflare is allowed in the EC2 security group, etc.
IP addresses from Cloudflare are listed at.
https://www.cloudflare.com/ips/

For additional troubleshooting, please check the following sites.
https://community.cloudflare.com/t/521-web-server-is-down-web/398712

profile picture
EXPERT
answered a year ago

You are not logged in. Log in to post an answer.

A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker.

Guidelines for Answering Questions